8 btmTypes "github.com/bytom/protocol/bc/types"
9 "github.com/jinzhu/gorm"
10 log "github.com/sirupsen/logrus"
12 "github.com/vapor/crypto/ed25519/chainkd"
13 "github.com/vapor/errors"
14 "github.com/vapor/federation/common"
15 "github.com/vapor/federation/config"
16 "github.com/vapor/federation/database"
17 "github.com/vapor/federation/database/orm"
18 "github.com/vapor/federation/service"
19 "github.com/vapor/federation/util"
20 vaporBc "github.com/vapor/protocol/bc"
21 vaporTypes "github.com/vapor/protocol/bc/types"
24 var collectInterval = 5 * time.Second
28 assetStore *database.AssetStore
29 txCh chan *orm.CrossTransaction
34 mainchainNode *service.Node
35 sidechainNode *service.Node
36 remotes []*service.Warder
39 func NewWarder(db *gorm.DB, assetStore *database.AssetStore, cfg *config.Config) *warder {
40 local, remotes := parseWarders(cfg)
43 assetStore: assetStore,
44 txCh: make(chan *orm.CrossTransaction),
45 fedProg: util.ParseFedProg(cfg.Warders, cfg.Quorum),
46 position: local.Position,
48 xprv: string2xprv(xprvStr),
49 mainchainNode: service.NewNode(cfg.Mainchain.Upstream),
50 sidechainNode: service.NewNode(cfg.Sidechain.Upstream),
55 func parseWarders(cfg *config.Config) (*service.Warder, []*service.Warder) {
56 var local *service.Warder
57 var remotes []*service.Warder
58 for _, warderCfg := range cfg.Warders {
59 if warderCfg.IsLocal {
60 local = service.NewWarder(&warderCfg)
62 remote := service.NewWarder(&warderCfg)
63 remotes = append(remotes, remote)
68 log.Fatal("none local warder set")
74 func (w *warder) Run() {
75 ticker := time.NewTicker(collectInterval)
76 for ; true; <-ticker.C {
77 txs := []*orm.CrossTransaction{}
78 if err := w.db.Preload("Chain").Preload("Reqs").
79 // do not use "Where(&orm.CrossTransaction{Status: common.CrossTxPendingStatus})" directly,
80 // otherwise the field "status" will be ignored
81 Model(&orm.CrossTransaction{}).Where("status = ?", common.CrossTxPendingStatus).
82 Find(&txs).Error; err == gorm.ErrRecordNotFound {
84 } else if err != nil {
85 log.Warnln("collectPendingTx", err)
88 for _, tx := range txs {
89 go w.processCrossTx(tx)
94 func (w *warder) processCrossTx(ormTx *orm.CrossTransaction) {
95 if err := w.validateCrossTx(ormTx); err != nil {
96 log.Warnln("invalid cross-chain tx", ormTx)
100 destTx, destTxID, err := w.proposeDestTx(ormTx)
102 log.WithFields(log.Fields{"err": err, "cross-chain tx": ormTx}).Warnln("proposeDestTx")
106 if err := w.initDestTxSigns(destTx, ormTx); err != nil {
107 log.WithFields(log.Fields{"err": err, "cross-chain tx": ormTx}).Warnln("initDestTxSigns")
111 if err := w.signDestTx(destTx, ormTx); err != nil {
112 log.WithFields(log.Fields{"err": err, "cross-chain tx": ormTx}).Warnln("signDestTx")
116 for _, remote := range w.remotes {
117 signs, err := remote.RequestSign(destTx, ormTx)
119 log.WithFields(log.Fields{"err": err, "remote": remote, "cross-chain tx": ormTx}).Warnln("RequestSign")
123 w.attachSignsForTx(destTx, ormTx, remote.Position, signs)
126 if w.isTxSignsReachQuorum(destTx) && w.isLeader() {
127 submittedTxID, err := w.submitTx(destTx)
129 log.WithFields(log.Fields{"err": err, "cross-chain tx": ormTx, "dest tx": destTx}).Warnln("submitTx")
133 if submittedTxID != destTxID {
134 log.WithFields(log.Fields{"err": err, "cross-chain tx": ormTx, "builtTx ID": destTxID, "submittedTx ID": submittedTxID}).Warnln("submitTx ID mismatch")
138 if err := w.updateSubmission(ormTx); err != nil {
139 log.WithFields(log.Fields{"err": err, "cross-chain tx": ormTx}).Warnln("updateSubmission")
145 func (w *warder) validateCrossTx(tx *orm.CrossTransaction) error {
147 case common.CrossTxRejectedStatus:
148 return errors.New("cross-chain tx rejected")
149 case common.CrossTxSubmittedStatus:
150 return errors.New("cross-chain tx submitted")
151 case common.CrossTxCompletedStatus:
152 return errors.New("cross-chain tx completed")
158 func (w *warder) proposeDestTx(tx *orm.CrossTransaction) (interface{}, string, error) {
159 switch tx.Chain.Name {
161 return w.buildSidechainTx(tx)
163 return w.buildMainchainTx(tx)
165 return nil, "", errors.New("unknown source chain")
169 func (w *warder) buildSidechainTx(ormTx *orm.CrossTransaction) (*vaporTypes.Tx, string, error) {
170 destTxData := &vaporTypes.TxData{Version: 1, TimeRange: 0}
171 muxID := &vaporBc.Hash{}
172 if err := muxID.UnmarshalText([]byte(ormTx.SourceMuxID)); err != nil {
173 return nil, "", errors.Wrap(err, "Unmarshal muxID")
176 for _, req := range ormTx.Reqs {
177 // getAsset from assetStore instead of preload asset, in order to save db query overload
178 asset, err := w.assetStore.GetByOrmID(req.AssetID)
180 return nil, "", errors.Wrap(err, "get asset by ormAsset ID")
183 assetID := &vaporBc.AssetID{}
184 if err := assetID.UnmarshalText([]byte(asset.AssetID)); err != nil {
185 return nil, "", errors.Wrap(err, "Unmarshal muxID")
188 rawDefinitionByte, err := hex.DecodeString(asset.RawDefinitionByte)
190 return nil, "", errors.Wrap(err, "decode rawDefinitionByte")
193 issuanceProgramByte, err := hex.DecodeString(asset.IssuanceProgram)
195 return nil, "", errors.Wrap(err, "decode issuanceProgramByte")
198 input := vaporTypes.NewCrossChainInput(nil, *muxID, *assetID, req.AssetAmount, req.SourcePos, 1, rawDefinitionByte, issuanceProgramByte)
199 destTxData.Inputs = append(destTxData.Inputs, input)
201 controlProgram, err := hex.DecodeString(req.Script)
203 return nil, "", errors.Wrap(err, "decode req.Script")
206 output := vaporTypes.NewIntraChainOutput(*assetID, req.AssetAmount, controlProgram)
207 destTxData.Outputs = append(destTxData.Outputs, output)
210 destTx := vaporTypes.NewTx(*destTxData)
211 w.addInputWitness(destTx)
213 if err := w.db.Where(ormTx).UpdateColumn(&orm.CrossTransaction{
214 DestTxHash: sql.NullString{destTx.ID.String(), true},
215 }).Error; err != nil {
219 return destTx, destTx.ID.String(), nil
222 func (w *warder) buildMainchainTx(ormTx *orm.CrossTransaction) (*btmTypes.Tx, string, error) {
223 return nil, "", errors.New("buildMainchainTx not implemented yet")
226 // tx is a pointer to types.Tx, so the InputArguments can be set and be valid afterward
227 func (w *warder) addInputWitness(tx interface{}) {
228 witness := [][]byte{w.fedProg}
229 switch tx := tx.(type) {
231 for i := range tx.Inputs {
232 tx.SetInputArguments(uint32(i), witness)
236 for i := range tx.Inputs {
237 tx.SetInputArguments(uint32(i), witness)
242 func (w *warder) initDestTxSigns(destTx interface{}, ormTx *orm.CrossTransaction) error {
243 crossTxSigns := []*orm.CrossTransactionSign{}
244 for i := 1; i <= len(w.remotes)+1; i++ {
245 crossTxSigns = append(crossTxSigns, &orm.CrossTransactionSign{
246 CrossTransactionID: ormTx.ID,
248 Status: common.CrossTxSignPendingStatus,
251 return w.db.Create(crossTxSigns).Error
255 func (w *warder) signDestTx(destTx interface{}, tx *orm.CrossTransaction) error {
256 if tx.Status != common.CrossTxPendingStatus || !tx.DestTxHash.Valid {
257 return errors.New("cross-chain tx status error")
264 func (w *warder) attachSignsForTx(destTx interface{}, ormTx *orm.CrossTransaction, position uint8, signs string) {
268 func (w *warder) isTxSignsReachQuorum(destTx interface{}) bool {
272 func (w *warder) isLeader() bool {
273 return w.position == 1
276 func (w *warder) submitTx(destTx interface{}) (string, error) {
277 switch tx := destTx.(type) {
279 return w.mainchainNode.SubmitTx(tx)
281 return w.sidechainNode.SubmitTx(tx)
283 return "", errors.New("unknown destTx type")
287 func (w *warder) updateSubmission(tx *orm.CrossTransaction) error {
288 if err := w.db.Where(tx).UpdateColumn(&orm.CrossTransaction{
289 Status: common.CrossTxSubmittedStatus,
290 }).Error; err != nil {
294 for _, remote := range w.remotes {
295 remote.NotifySubmission(tx)